EP 1773948 A1 20070418 - METHOD FOR MAKING PRECIPITATED SILICATE COMPOSITIONS AND PRODUCTS THEREOF
Title (en)
METHOD FOR MAKING PRECIPITATED SILICATE COMPOSITIONS AND PRODUCTS THEREOF
Title (de)
VERFAHREN ZUR HERSTELLUNG VON FÄLLUNGSSILICATZUSAMMENSETZUNGEN UND ENTSPRECHENDE VERFAHRENSPRODUKTE
Title (fr)
PROCÉDÉ DE FABRICATION DE COMPOSITIONS DE SILICATE PRÉCIPITÉES ET PRODUITS IDOINES
Publication
Application
Priority
- US 2005023197 W 20050628
- US 89850204 A 20040723
Abstract (en)
[origin: US2006027142A1] New methods of producing narrower particle size distribution precipitated silica and/or silicate materials are provided. Such a method permits a significant reduction in manufacturing costs through the utilization of more efficient drying/evaporation components, in essence, in one potentially preferred embodiment, production of such silica and/or silicate materials followed directly by a hydraulic chamber press filtering step combined with vacuum dewatering subsequently leading to the needed resultant particle comminution. The resultant precipitated silicas and/or silicates produced thereby exhibit greater density prior to comminution and thus greater propensity for more uniform milling than previously utilized and prevalent spray/flash drying apparatuses. Also encompassed within this invention are the resultant precipitated silica and/or silicate particles produced, including those that surprisingly exhibit extremely high transmittance properties, thereby potentially providing excellent narrow particle distribution silica materials for clear (transparent) end-uses.
IPC 8 full level
CPC (source: EP US)
C09C 1/3009 (2013.01 - EP US); C01P 2004/61 (2013.01 - EP US); C01P 2006/19 (2013.01 - EP US); C01P 2006/82 (2013.01 - EP US)
Citation (search report)
See references of WO 2006023087A1
Designated contracting state (EPC)
AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IS IT LI LT LU MC NL PL PT RO SE SI SK TR
DOCDB simple family (publication)
US 2006027142 A1 20060209; US 7125432 B2 20061024; CN 101027366 A 20070829; EP 1773948 A1 20070418; WO 2006023087 A1 20060302
DOCDB simple family (application)
US 89850204 A 20040723; CN 200580024840 A 20050628; EP 05764129 A 20050628; US 2005023197 W 20050628